16层螺旋CT颈部血管成像的临床应用价值

Clinical Application Value of 16-Slice Spiral Computed Tomography Angiography in the Diagnosis of Cervical Artery Diseases

目的探讨16层螺旋CT颈部血管成像的技术及临床应用价值。方法34例临床怀疑颈动脉或椎动脉疾病者,行16层螺旋CT颈部血管成像检查,将扫描获得的原始图像传到工作站,进行多种方法后处理,对颈部血管狭窄进行定量评价,对粥样硬化斑块进行准确评估。结果34例患者中,颈动脉粥样硬化者29例,管腔轻度狭窄者10例,中度狭窄者12例,重度狭窄者5例,节段闭塞者2例;钙化斑块15例,非钙化斑块10例,混合斑块9例;CT值范围20-1140Hu,其中钙化斑块CT值220-1140Hu,非钙化斑块CT值20-73Hu;左侧颈总动脉起源异常者1例;颈动脉体瘤2例;椎动脉狭窄者4例。结论16层螺旋CT有良好的时间和密度分辨率,联合三维成像各种后处理功能,可以直观显示颈部血管的形态,准确评价管腔的狭窄程度和评估粥样硬化斑块的稳定性,为临床提供可靠的治疗方案和诊断信息,有重要的临床应用价值。

ObjectiveTo investigate the clinical application value of 16-slice apiral CT angiography in the Diagnosis of cervical artery diseases. Methods All 34 cases with suspected as carotid or vertebral diseases underwent multi-slice spiral computed tomography angiography examination using 16-silce spiral CT. The original imaging data were inputted and disposed with varies imaging processing software on the workstation, to quantified evaluate the luminal stenosis of cervical arteries and atherosclerotic plaque. Results All 34 cases included 29 carotid atherosclerosis,10 mlid luminal stenosis, 12 moderate luminal stenosis, 5 severe luminal stenosis,2 segmental occlusion;15 calcified plaque, 10 noncalcified plaque,9 mixed plaque ;The total CT value ranged from 20-1140Hu, and the CT value of calcified plaque ranged from 220-1140Hu,the CT value ofnoncalcified plaque ranged from 20-73Hu; hese 7 positive findings included 1 left common carotid artery abnomal origin,2 carotid artery aneurysm and 4 vertebral artery stenosis. Conclu- sion 16-slice spiral CT is good of time and density resolusion, combined later with 3D imaging processing on the workstation,it can directly display the shape of cervical artery, evaluate the percent of luminal stenosis and the stability of atherosclerotic plaque.So CTA is an accurate modality in making the diagnosis of cervical artery diseases.